If you don't close your position at the same time, you will generally default to the earliest contract, so your first-hand price is higher, and the average price behind it is naturally lower. The closing profit and loss is calculated according to yesterday's settlement price and your closing price. It doesn't mean you lost money, but it's low according to yesterday's settlement price. It just deducts the funds that have been settled for you from your account. Contact me if you need anything.